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Reply To: Electrical riddle no. 8 – Lamp glow

#1198
Hamid

    The lamp 60W will be brighter than 100W; because: R60W > R100W & (P60W = R60W.I2 ) > (P100W = R100W.I2) But let us assume the lamp 60w is installed in room A and another lamp is located in room B with same electrical circuit. For maximum lighting achievement in room B, which lamp (rated power) shall be permuted with lamp 100w?